2666724 has 48 divisors (see below), whose sum is σ = 6585600. Its totient is φ = 838656.

The previous prime is 2666717. The next prime is 2666743. The reversal of 2666724 is 4276662.

It is a super-2 number, since 2×2666724² = 14222833784352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27444 + ... + 27540.

It is an arithmetic number, because the mean of its divisors is an integer number (137200).

2^2666724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3292800).

2666724 is an abundant number, since it is smaller than the sum of its proper divisors (3918876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666724 is a wasteful number, since it uses less digits than its factorization.

2666724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 210 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 2666724 is about 1633.0107164376. The cubic root of 2666724 is about 138.6732486808.

The spelling of 2666724 in words is "two million, six hundred sixty-six thousand, seven hundred twenty-four".